asyncrat | 73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3

General

Target

73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
Size

1.7MB
MD5

45202c1ec5edd2875a74e0da4e6d1f90
SHA1

7794105222c76e205a0e2196b03a083000de061c
SHA256

73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3
SHA512

f1a5ed2e3760b6eace1b01c79a3b731fbc7ee26a861deb4bc5d392d4467b200418d3146145b36b3700f3dda0b4ce425744577e2c507732eadfe77dc4fd6c510b
SSDEEP

24576:eATKuetagT4lr9DtM8YHQBa56e0/ihJPD0+JXx/YtYBvtPzB2fieINXld/rcG/X:e+KNzCa56eOihBZiYB1/NXl5rc

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

143.198.82.194:8808

Mutex

wfi0IhSI9Rqa

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/816-8-0x0000000000540000-0x0000000000552000-memory.dmp	family_asyncrat

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2700	2780	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 2780	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe	32
PID 816 wrote to memory of 2780	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe	32
PID 816 wrote to memory of 2780	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe	32
PID 816 wrote to memory of 2780	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe	32
PID 816 wrote to memory of 2780	816	73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe	32

C:\Users\Admin\AppData\Local\Temp\73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe
"C:\Users\Admin\AppData\Local\Temp\73aa0fa3a9f86a2551fa7d06493ecc1becc8fda30db0685eb4cacdf3ce2930c3N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:816
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\System32\svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2780 -s 52
    3⤵
    - Program crash
    PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabFDB2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/816-9-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/816-4-0x00000000000E0000-0x00000000000F4000-memory.dmp

Filesize
80KB

Download
memory/816-7-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/816-8-0x0000000000540000-0x0000000000552000-memory.dmp

Filesize
72KB

Download
memory/816-0-0x0000000077580000-0x0000000077656000-memory.dmp

Filesize
856KB

Download
memory/816-26-0x0000000077580000-0x0000000077656000-memory.dmp

Filesize
856KB

Download
memory/816-27-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/816-28-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/816-29-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/816-30-0x0000000000360000-0x0000000000520000-memory.dmp

Filesize
1.8MB

Download
memory/816-31-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/2780-3-0x0000000000080000-0x0000000000094000-memory.dmp

Filesize
80KB

Download
memory/2780-1-0x0000000000080000-0x0000000000094000-memory.dmp

Filesize
80KB

Download

Analysis

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